i have been taken vicodin for several years , neve more than one or two pils every week , my dr, said vicodin it's nor on the market any more, so he changed to norco,, i tried several times with norco, and i have diferents side efects, like heavy headaches, ando vomiting , my dr insist that is the same medicines only diferent brand so way i can have the some good efect with norco ?